Dandy-roll.



J. J. PLAK.

DNDY ROLL. APPLICATION I'ILED JAN. 28, 1909. 971,77., Patented 0ct.4,1910.

Q 2 sHETs-SHBBT 1. .N W N J. J. PLANK.

DANDY ROLL.

JOSEPI-I J. PLANK, OF APPLETON, WISCONSIN.

DANDY-ROLL.

Specificaton of Ietters Patent.

Application filed January 28, 1909.

Patented Oct. 4, 1910.

Serial No. 474,719.

To all whom it may concern:

Be it known that I, JosEPr-I J. PLANK, citizen of the United States, residing at Appleton, in the county of Outagamie and State of 'Tisconsin, have invented certain new and useful Ii'nproveinents in Dandy- Rolls, of which the following is a specification.

The present invention relates in general to improvements in paper making inachinery, and more particularly to a novel dandy roll which is peculiarly designed and constructed so as to obtain an absolutely rigid construction.

The invention further contemplates a dandy 'roll which is inexpensive in its construction, which can be forined of coinparatively light wire, and in which the heads are securely connected to the sieve or network portion so that they will not break away therefrom while the machine is in operation.

For a full understanding` of the invention reference is to be had to the following desoription and accompanying drawings in which :a

Figure l is a side elevation of a dandy roll constructed in accordance with the invention. Fig. 2 is a detached perspeotive view of one of the rings which are applied to the head of the roll. Fig. 3 is a similar view of one of the heads. Fig. 4 is a transverse sectional view through the roll. Fig. 5 is a perspective view of one end of the roll looking at it from the inside, the remainder of the roll being broken away, and Fig. 6 is a longitudinal sectional View through one of the corners of the roll.

Corresponding and like parts are referred to in the following' description and indicated in all the views of the drawings by the same reference characters.

Referring specifically to the enibodiinent of the invention shown on the drawings, the numerals 1 designate the two heads of the roll, the said heads having a circular formation and being provided with the usual trunnions 2. The inner' edge of each of the heads is rabbeted at 1a, and the two heads are connected by a series of spaced. longitudinal wires 8, the extremities of which are received within the rabbeted edges 1a ofl the heads and soldered or otherwise rigidly connected thereto. In the preferred construction these longitudinal wires 3 are parallel to each other and are uniforinly spaced at frequent intervals around the entire circuniference of the roll.

Arranged within the longitudinal wires 3 is a spiral reinforcing wire 4 the ends of which are coiled to provide rings 5 which are integrally formed with the wire 4 and which are soldered or otherwise rigidly connected to the heads 1. The Various convolutions of the spiral reinforcing wire 4 are preferably uniformly spaced throughout the entire length of the roll in close relation and are arranged transversely with respect to the longitudinal wires 3 to which they are soldered or otherwise rigidly connected at their points of contact therewith. Owing to the fact that both the longitudinal wires 3 and the rings 5 are rigidly secured to the heads 1, it will be obvous that a secure connection will be obtained between the heads and the wires so that there will be no danger of the former working loose and falling out of position when the roll is in operation.

A secondv reinforcing wire 6 is coiled around the interior of the longitudinal wires 3 between the various convolutions of the spiral reinforcing Wire 4 and is bent angularly into zigzag form. The extremities of the second reinforcing wire 6 are also secured to the rings 5 and the said second reinforcing wire zigzags back and forth between the various convolutions of the spiral reinforcing Wire so as to operate in conjunction therewith to form a net-work of triangular trusses to rigidly support the longitudinal wires 3 and the spiral wire 4. As shown on the drawings, eight points of contact or apexes of these triangular trusses are formed for every convolution of the second reinforcing or spiral wire 6, the apexes of four of the triangular trusses facing in one direction while the apexes of the remaining triangular figures face in the opposite direction. These various triangular trusses operate to obt-ain an absolutely rigid construction and enable the sieve portion of the roll to be constructed of coinparatively light inaterial.

I-Iaving thus described the invention what is clainied as new is:-

A dandy roll including a pair of spaced heads, annular Shoulders formed in the peripheries of said heads, longitudinal wires disposed across said heads and terlninated npon said Shoulders, a spiral Wire disposed between said heads and against the inner faces of said longitudinal wires, rings integrally formed upon the opposite ends of said spiral Wire for engagement against said 4 heads to be secured thereto, and a zigzag Wire disposed between the convolutions of said spiral Wire and secured thereto at the points of contact between the same. 10 In testimony Whereof I afix my signature in presence of two witnesses. w

JOSEPH J. PLANK. [L. 5.] Vitnesses:

7. J. KONRAD, Jr., W'M. F. KAMPS. 

